winter



3 SheetsShe et 1.

(No Model.)

H. WINTER WEAR}? DROP.

Patented Dec. 2

. lumen/tor,

witnesels. z:

N PETERS. Pnmo-Lnhngmplwn Washiflgfon 0.1;

(No Model.) 3 SheetsSheet 2.

H. WINTER.

WHARF DROP. No. 309,812. Patented Dec. 23, 1884.

Fig.

l F v s l I I Triinesses, Invenior,

N. PETERS Plvolo-lilhugmphun WnaNngloll. u. q.

(No Model.) 3 Sheets-Sheet 3.

- H. WINTER.

WHARF DROP. N0. 309,'81Z. Patented Dec. 23, 1884.

N. PETERS pllulo'Llllwgmphur. WJSIIIIIQIDIL n c.

Nrrnn *rrns HERMAN WINTER, or BROOKLYN, N.

Armrr FFICE.

Y., ASSIGNOR OF ONE-HALF TO THE WHARF-DROP.

SPECIFICATION forming part of Letters Patent No. 309,812, dated December 23, 1884.

Application filed July El, 1584.

To all whom it may concern:

Be it known that I, HERMAN WINTER, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in IVharf-Drops; and I do hereby declare that the following specification, taken in connection with the accompanying drawings, forming a part ofthe same, is a full, clear, and exact description thereof. My improvement relates to means for raising and lowering a wharf-drop or bridgeway to meet the varying requirements of tides and of light or loaded vessels; and the invention consists in the combination of devices hereinafter described, whereby a wharfd rop may be operated easily and quickly, and may be securely held in any required position.

Referring to the drawings, Figure 1 represents a front view of a wharf 1 drop provided with my improvement. of the same. Figs. 3 and 4 represent, on a larger scale, certain parts of the mechanism employed. Figs. 5 and 6 represent different methods of applying my invention, and Fig. 7 is aview of the worm-wheel and double chainwheel employed in the arrangement shown in Fig. 7.

A is a wharf-drop of the usual construction, having its rear end hinged to the wharf proper. Its forward end may be supported by a float, so as to rise and fall with the tide or not, as may be preferred.

B, Fig. 1, represents the fixed portion of the wharf. On each side of the adj ustable wharfdrop are erected stanchions O O, of

suitable height. Secured to these stanchions, and supported thereby, are cross-beams D D. In suitable bearings attached to these cross beams D D, near each end thereof, are mounted the shafts E E. Upon each of these shafts is mounted a wormwheel, F, and a chainwheel, G, as clearly shown in Fig. 2. Said worm-wheel and chain-wheel I prefer to cast as one, as shown in Fig. 4, although, if desired, they may be .made separately. The chain-wheel G is provided with lugs or other suitable devices to prevent the chain from slipping thereon. Attached to one of the cross-beams D are the brackets H H, in each of which is mounted a worm -shaft, I, so ar- Fig. 2 is a side view,

(No model.)

ranged that the worm i thereon will mesh properly with the worm-wheel F. Upon the end of each worm-shaft is placed a wheel or pulley, K, adapted to receive an endless chain or rope, L. To the forward end of the wharf- 5 drop A, and at opposite sides thereof, are secured the chains M M. Each of these chains is carried upward and passes over the chainwheel G, as shown at Figs. 1 and 2, and to the end of each chain is attached the counterbalance-weight N, preferably arranged so as to be guided between the stanchions O O, as shown at Fig. 2.

The operation of the parts will be readily understood. To raise or lower the wharfdrop the pulleys K K are revolved in the required direction by means of the endless chains L L. The revolution of the pulleys K K operates the worm shafts I I, which in turn actuate the worm -wheels F F and the chain-wheels GG. The movement of the chain wheels G G causes a corresponding movement of the chains M M, the movement of which chains in one direction raises the wharf-drop A and lowers the weights N N, 7 while a movement of, the chains in the opposite direction will cause the weights to be raised and the wharf-drop to be lowered.

In the arrangement shown in Fig. 1 a sepa rate worm shaft is employed for each of the worm-wheels F F. This requires the employment of two pulleys, K K-o11e upon each side of the wharf-dropboth of which must be operated simultaneously to properly raise or lower the wharf-drop.

In Fig. 5 is shown amodified arrangement wherein a single worm-shaft only is employed extending from one side of the wharf-drop to the other, and provided with a right-and-1efthand worm, so as to operate both worm- 0 wheels F F. By this arrangement, while it may be convenient to provide two pulleys, K K, that the worm-shaft may be operated from either side of the wharf-drop, power need be applied to but one of said pulleys in order to 5 raise or lower the drop.

In Fig. 6 is represented another modification of arrangement, whereby but one wormwheel is employed instead of two. As shown in the drawings, this single worm-wheel F is which the chains M M, attached to the wharf drop, pass, in the manner shown in the drawings, the chain M passing over the pulley f, thence around one section of the double chainwheel G, from the under to the upper side thereof, over the pulleyf to the weight N, and the chain M passing over the pulley f thence over the other section of the chainwheel from the upper to the under side thereof, over the pullcyf to the weight N. 13y revolving the pulley K and the worm-shaft I inoue direction or the other the worn'i-wheel 1* will be rotated to the right or to the left, and the chains M M and the wharf-drop, to which they are attached, will be lowered or raised accordingly.

The arrangement of devices for operating a wharf-drop above described is more simple and compact than any heretofore employed.

.The operative parts are located overhead and occupy no space upon the wharf, and the power required to be applied to operate the drop is much less. Moreover, because of the employment of a worm-shaft and worm-wheel, the wharf-drop will remain secure and firm in any position without the aid of any pawls or other locking arrangements, by reason of the fact that while the worm-shaft can operate the worm-wheel the worm-wheel cannot operate the worm-shaft, and no amount of strain upon the chains M M can cause the revolution of the worm-wheel.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, substantially as hereinbefore set forth, of a hinged wharf drop or bridgeway, suitable chains, chain-wheels, and counterbalance-weights, as described, awormshaft and worm-wheel for raising and lower? ing the wharf-drop and holding it at any desired elevation, and a hand-chain and pulley or equivalent device for rotating the wormgear.

HERMAN XVINTER.

Vitnesses:

HENRY P. BUTLER, R. V. WV. DUBoIs.

Vim 

